package com.sitech.component.tree;

import java.util.List;

public interface TreeService
{
	public static String ROOT_NODE_ID = "-1";
	public static String NODE_TYPE_NOT_NODE = "0";
	public static String NODE_TYPE_NODE = "1";	
	public List<? extends Node> queryRootNode();
	public List<? extends Node> querySubNode(String nodeId);

}